<!doctype html>
<title>CSS Color Adjustment Test: about:blank doesn't cause a white backdrop in dark mode even though technically its color-scheme is mismatched</title>
<link rel="help" href="https://drafts.csswg.org/css-color-adjust/#color-scheme-effect">
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/9624">
<link rel="match" href="color-scheme-iframe-background-about-blank-ref.html">
<style>
:root { color-scheme: dark }
</style>
<p>Should not see a white frame below</p>
<iframe width="600" height="400"></iframe>
